Adding text to your cutter is an open feature request but until we add it to Cookiecad here is a way you can do it using the free 3D builder tool that comes with windows.
- Import your STL to 3D Builder
- Click “Edit” then “Emboss”
- For the pattern choose “text”. Turn off Bevel. Click on the spot where you want your text to go and type your text in the box. Then click the “Emboss” checkbox.
- Save your file and you’re done!
You can add text to the sidewall also and it will wrap around the edge: